Transmission & Drivetrain
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Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...
Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.
Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.
Showing In Stock Items. Show All 60 Items.
Speedometer Port Plug, Billet Aluminum, Black Anodized, Each
Part Number: BMM-20299
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Speedometer Port Plug, Billet Aluminum, Black Anodized, Each
Part Number: BMM-20298
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Speedometer Port Plug, Billet Aluminum, Black Anodized, GM, TH400, Each
Part Number: BMM-20301
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Speedometer Delete Plug, Billet Aluminum, Natural, TH400, Each
Part Number: ICB-551908
Estimated Ship Date: Today
Estimated Ship Date: Today
Speedometer Port Plug, Billet Aluminum, Natural, 700R4, Each
Part Number: ICB-551961
Estimated Ship Date: Today
Estimated Ship Date: Today
4L80E Speed Sensor Plug Transmission Speedometer Port Cap Cover ICT Billet
Part Number: ICB-551919
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Speedometer Port Plug, Billet Aluminum, Black Anodized, Mopar, Each
Part Number: BMM-20300
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Transmission Speedometer Plug, Steel, Natural, Each
Part Number: SDA-555-7072
Estimated Ship Date: Dec 26, 2025 if ordered today
Estimated Ship Date: Dec 26, 2025 if ordered today
Transmission Harness, All-In-One Transmission Wiring Harness, Manual, T-56, Ford, GM, Each
Part Number: BTM-7100000
Estimated Ship Date: Today
Estimated Ship Date: Today
Manual Transmission, Magnum XL, 6-Speed, 1 1/8 in. 26-Spline, 2.97 First Gear, 0.63 Overdrive, Each
Part Number: REM-TUET18132
Not Yet Reviewed
Estimated Ship Date: Jan 19, 2026 if ordered today
Estimated Ship Date: Jan 19, 2026 if ordered today
This product may not be eligible for select promotional offers
Transmission Harness, All-In-One Transmission Wiring Harness, Manual, Chevrolet, Each
Part Number: BTM-7100002
Estimated Ship Date: Today
Estimated Ship Date: Today
Manual Transmission, Tremec, 6-speed, Aluminum Case, 26-spline Input, 2.66:1 First Gear Ratio, Ford, Each
Part Number: FMS-M-7003-M6266
Estimated Ship Date: Today
Estimated Ship Date: Today
This product may not be eligible for select promotional offers
Manual Transmission, Magnum XL, 6-Speed, 1 1/8 in. 26-Spline, 2.66 First Gear, 0.63 Overdrive, Each
Part Number: REM-TUET18131
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
This product may not be eligible for select promotional offers
Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1968-72 GM A-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit
Part Number: AWR-COGM-A2G
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1968-72 GM A-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit
Part Number: AWR-COGM-A2J
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1955-57 Tri-5 Chevy, 2.66:1 First Gear, 0.63:1 Sixth, Kit
Part Number: AWR-COGM-B1G
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1955-57 Tri-5 Chevy, 2.97:1 First Gear, 0.50:1 Sixth, Kit
Part Number: AWR-COGM-B1J
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1967-69 GM F-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit
Part Number: AWR-COGM-F1G
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1967-69 GM F-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit
Part Number: AWR-COGM-F1J
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1968-74 Chevy Nova, 2.66:1 First Gear, 0.63:1 Sixth, Kit
Part Number: AWR-COGM-X2G
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1968-74 Chevy Nova, 2.97:1 First Gear, 0.50:1 Sixth, Kit
Part Number: AWR-COGM-X2J
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1964-67 GM A-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit
Part Number: AWR-COGM-A1G
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1964-67 GM A-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit
Part Number: AWR-COGM-A1J
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1970-74 GM F-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit
Part Number: AWR-COGM-F2G
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1970-74 GM F-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit
Part Number: AWR-COGM-F2J
Not Yet Reviewed
Estimated Ship Date: Jan 23, 2026 if ordered today
Estimated Ship Date: Jan 23, 2026 if ordered today
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